gjournal crash: "error while writing data (error=6)"

[Charles Owens]

Pawel Jakub Dawidek wrote:
> On Mon, Oct 05, 2009 at 10:23:25AM -0400, Charles Owens wrote:
>   
>> Hello folks,
>>
>> We've had a system crash, apparently related to GEOM_JOURNAL, on an i386
>> system running 7.0-RELEASE-p11.   Here's what we could see on the screen
>> (formatted for readability):
>>
>> GEOM_JOURNAL: [copy] Error while writting data (error=6) \
>>     ad4s1a[WRITE(offset=43561402368, length=16384)]
>> GEOM_JOURNAL: [copy] Error while writting data (error=6) \
>>     ad4s1a[WRITE(offset=48868164096, length=16896)]
>> GEOM_JOURNAL: Error while reading data from ad4s1a (error=6).
>>     
>
> Error 6 (ENXIO, man errno(2)) might mean that ad4s1a disappeared. There
> were no any errors earlier indicating that ad4 was disconnected or
> similar?
>   

Such as if someone had come by and temporarily pulled out the drive?  
Nothing in the logs of the sort, no.

Do you think this is unrelated to the offset-zero layout question?  In
any case, should we be worried about that?

Thanks for the reply.